Ultimate SF date night?

I want to plan an amazing date night as a surprise for my husband. We live in SF and love this city so much, but had a kid a while back and haven’t done anything just the 2 of us in over a year and we never get out after 5pm anymore.

My husband is the most incredible father and partner. He does everything for my son and me and means the world to us. I want to plan a really special day/night as a surprise as a chance to experience the city we love and reconnect as a couple. There are so many potential options, I don’t know where to start planning! Suggestions?